Undefined

4.7

828 Reviews

CAN$31 to CAN$50

Bistro

Make a reservation

2 people

Mar 27, 2025

7:00 PM

Booked 26 times today

Experiences are available.

About this restaurant

Good for special occasions
Great for creative cocktails
Charming

UnDefined has been changing the way people think about dining out in Hamilton. Voted one of Hamilton's best all-around restaurants for 2021, 2022, 2023, we are making a big impact on King William Street. With an evolving, seasonal and whimsical approach, our passion is what drives us every day. We strive to push the limits, and for our team, it is just what we love to do. We cook from scratch because that is just the way it should be. We love to challenge the way we all think about dining out.

We believe that there is no reason to put yourself in a box when going out with friends, so we do not do that here. Whether it is a night out with friends, an intimate dinner for two, or just something extraordinary, We are not afraid to take the familiar and turn it into something memorable. If it tastes good, we will put it on a plate, in a glass, or whatever. Our mantra is as simple as eat, drink, and enjoy!

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Dining areas

Additional information

Dining style
Casual Elegant
Price
CAN$31 to CAN$50
Cuisines
Bistro, Farm-to-table, Cocktail Bar
Hours of operation
Brunch Sat, Sun 10:00 am–3:00 pm Lunch Wed–Fri 11:30 am–4:00 pm Dinner Daily 4:00 pm–10:00 pm Bar Fri, Sat 10:00 pm–12:00 am
Phone number
(905) 393-8343
Website
http://www.eatundefined.com/
Payment options
AMEX, Mastercard, Visa
Dress code
Business Casual

Location
35 King William St, Hamilton, ON L8R 1A1
Neighborhood
Hamilton
Cross street
James Street North & King William
Parking details
Street Parking
Public transit
James Street North & King William
Additional
Bar/Lounge, Beer, Chef's Table, Cocktails, Corkage Fee, Full Bar, Gender Neutral Restroom, Gluten-free Options, Happy Hour, Late Night, Non-Smoking, Patio/Outdoor Dining, Vegan, Weekend Brunch, Wine

Gift card

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Experiences

Brunch UnDefined!
Jan 31, 2025 - Apr 30, 2025
Join us for an UnDefined brunch Saturdays & Sundays. UnDefined is know for its ever evolving menus and unique additions. Indulge in some of our favorites as well as a seasonal a la carte offerings to brunch without definition. Reservations highly recommended - No additional costs - Menu offering is a la carte

Popular dishes

What 828 people are saying

Undefined reviews from people who’ve dined at this restaurant. Based on recent rating.

Overall ratings and reviews

Reviews can only be made by diners who have eaten at this restaurant

4.7

4.7 based on recent ratings

4.7Food
4.8Service
4.6Ambience
4.4Value

Noise • Moderate

Loved For

Toronto / Ontario
Bistro
Southern Ontario
Innovative

Review summary

AI-generated from verified diner reviews

Undefined in Hamilton boasts a vibrant atmosphere with "creative and exceptional" cuisine and "great service." Guests appreciate the innovative menu and "thoughtful portions," with standout dishes like wild boar dumplings and scallop risotto. The ambiance is "fun fine dining," and the cocktails are highly praised. Highly recommended for a delightful dining experience.

828 Reviews

R
Rhianne
Vancouver1 review
5.0
Dined 1 day ago
1. Overall 5
2. Food 5
3. Service 5
4. Ambience 5
Amazing food and our server was amazing as well :)
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G
Gordana
Toronto1 review
5.0
Dined 5 days ago
1. Overall 5
2. Food 5
3. Service 5
4. Ambience 5
This kitchen is second to no one. I already told Chris I'm naming my first born son after him. There is no way I could say enough good things about this restaurant. The atmosphere, the menu, the presentation and the staff is 10/10.
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OT
OpenTable Diner
Toronto3 reviews
5.0
Dined 5 days ago
1. Overall 5
2. Food 5
3. Service 5
4. Ambience 5
As always great experience amazing food! Still my fav restaurant in Hamilton
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C
Cara
New York City1 review
5.0
Dined 6 days ago
1. Overall 5
2. Food 5
3. Service 5
4. Ambience 5
This was a meal and experience I will not forget. Amazing vibes, love the interior, very comfortable and fun feel while being elevated and special. Amazing service, Hannah? Just so personable and the presentation of the food rather than just plunking it down really added to the experience. Now… the food… oh my goodness, so creative, so freaking delicious and gorgeous plating. I will be back. Please add an extra scallop to the risotto, it’s just so good!
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J
Joshua
Toronto2 reviews
5.0
Dined on March 18, 2025
1. Overall 5
2. Food 5
3. Service 5
4. Ambience 5
One of our favourite restaurants. Constantly innovative, and incredibly delicious food. Feels like fun fine dining. Highly recommend!
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S
Sean
Unspecified1 review
4.0
Dined on March 15, 2025
1. Overall 4
2. Food 5
3. Service 5
4. Ambience 4
Food was exceptional. Cocktails were very good also. Great service.
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C
Carolyn VIP
Toronto24 reviews
5.0
Dined on March 9, 2025
1. Overall 5
2. Food 5
3. Service 5
4. Ambience 5
Always so good! The biscuits are amazing and really so is everything we have tried. Even though we live in Toronto, we love making the trip to Undefined
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J
Jenn
Toronto1 review
5.0
Dined on March 4, 2025
1. Overall 5
2. Food 5
3. Service 5
4. Ambience 4
Great service, knowledgable server and bartender. Food was great. Really enjoyed the plum mule mocktail!
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G
Greg
Toronto3 reviews
5.0
Dined on March 3, 2025
1. Overall 5
2. Food 5
3. Service 5
4. Ambience 5
What an amazing dinner experience! Hannah was so patient with us and so accommodating (we asked to be moved to a warmer spot), we really appreciated that. And talk about incredible flavours and aromas - wow, we were blown away. Enjoyed the burger, cappelletti and the wild boar dumplings. Each dish was a standout on its own, we thoroughly enjoyed the intriguing falvours and the super-interesting interplay of ingredients and aromas. Just incredible. Oh, the smoked Old Fashioned - what a treat! Fair warning, Hannah: we'll be back! 😂 See you "tomorrow"! Our sincerest thanks for the wonderful experience to the staff - GREAT work!
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AK
AlishaK
Toronto4 reviews
5.0
Dined on March 1, 2025
1. Overall 5
2. Food 5
3. Service 5
4. Ambience 5
Visiting Hamilton for first time from Toronto and SO glad a random stranger from Reddit suggested we do brunch here! The mushroom eggs Benedict is the best eggs benny I’ve ever had. Service was outstanding as well. Eager to go back!
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FAQs

Undefined is rated 4.7 stars by 828 OpenTable diners.

Undefined does offer gift cards which you can purchase here.

Yes, you can generally book this restaurant by choosing the date, time and party size on OpenTable.